Janczowice [jant͡ʂɔˈvit͡sɛ] is a village in the administrative district of Gmina Łagiewniki, within Dzierżoniów County, Lower Silesian Voivodeship, in south-western Poland.

It lies approximately 16 km (10 mi) north-east of Dzierżoniów, and 44 km (27 mi) south-west of the regional capital Wrocław.